最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
鎢絲／Zr基金屬玻璃復(fù)合材料的界面反應(yīng)與擴散
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

TG146.4

基金項目:

“863”國家高技術(shù)發(fā)展計劃項目(2001AA331010)，國家重大基礎(chǔ)研究計劃項目(G200067201-3)，國家自然科學(xué)基金項目(50071005,50171006)，北京市重大項目(H020420030320)


The Interface Reaction and Diffusion of Tungsten-Fiber/Zr-Based Bulk Metallic-Glass Matrix Composites
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    采用滲流鑄造工藝制備了鎢絲增強不同Nb含量的Zr基金屬玻璃復(fù)合材料，利用X-Ray衍射、掃描電鏡以及電子探針考察了復(fù)合材料界面反應(yīng)和界面擴散情況，研究了基體合金中的Nb含量對復(fù)合材料界面反應(yīng)和界面擴散的影響。結(jié)果表明：對Zr55Al10Ni5Cu30基復(fù)合材料，滲流時，鎢絲與液相中的Zr發(fā)生界面包晶反應(yīng)，生成W5Zr3界面相，并使界面位置向液相方向移動。在Zr55Al10Ni5Cu30合金的基礎(chǔ)上添加Nb，發(fā)現(xiàn)Nb優(yōu)先在鎢絲界面偏聚，降低了Zr在鎢絲界面的偏聚和活度，抑制鎢絲與液相中的Zr包晶反應(yīng)的發(fā)生，沒有生成W5Zr3界面相，界面處只存在簡單的擴散層。同時發(fā)現(xiàn)Zr元素在鎢絲中的擴散系數(shù)降低，此時界面位置向鎢絲方向移動。

    Abstract:

    Zr-based metallic-glass matrix composites, which were reinforced by continuous tungsten fibers, were prepared by melinfiltration casting. The interface reaction and diffusion were analyzed by using X-Ray diffraction, SEM and EPMA. The influence of Nbcontent of the matrix alloy on the interface reaction and diffusion was also investigated. The results illustrate that for the Zr55Al10Ni5Cu3matrix composites an interface eutectoid reaction between W fiber and Zr in the liquid phase takes place and a W5Zr3 phase is formed athe interface. The interface moves to the direction of the liquid phase. For the matrix alloy containing Nb, the addition of Nb in the liquidcauses a significant change of interface reaction. Nb in the liquid phase exhibits a preferential adsorption at the surface of the W fiber, thusreduces the adsorption of Zr atom in the liquid phase at the surface of the W fiber. The activity of absorbed Zr at interface is decreasedand depresses the interface eutectoid reaction between W fiber and liquid. In this case the interface is a simple diffusion layer only. At thesame time the diffusion coefficient of Zr in the W is decreased by Nb addition and the interface moves to the direction of W fiber.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王美玲 惠希東 寇宏超 陳國良.鎢絲／Zr基金屬玻璃復(fù)合材料的界面反應(yīng)與擴散[J].稀有金屬材料與工程,2005,34(7):1102~1105.[Wang Meiling, Hui Xidong, Kou Hongchao, Chen Guoliang. The Interface Reaction and Diffusion of Tungsten-Fiber/Zr-Based Bulk Metallic-Glass Matrix Composites[J]. Rare Metal Materials and Engineering,2005,34(7):1102~1105.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:
  • 最后修改日期:2003-12-30
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: